SIGA Technologies, Inc. (SIGA) ownership: Top institutional holder: BlackRock, Inc. ($18.69M). Insider activity: Net Seller (5 buys, 14 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| BlackRock, Inc. | 3494193.00 | $18.69M | 2026-03-31 |
| VANGUARD GROUP INC | 2723750.00 | $16.64M | 2025-12-31 |
| DIMENSIONAL FUND ADVISORS LP | 2702724.00 | $14.46M | 2026-03-31 |
| AltraVue Capital, LLC | 2432024.00 | $13.01M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 1714380.00 | $9.17M | 2026-03-31 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 1525960.00 | $8.16M | 2026-03-31 |
| AMERICAN CENTURY COMPANIES INC | 1317784.00 | $7.05M | 2026-03-31 |
| GEODE CAPITAL MANAGEMENT, LLC | 1315545.00 | $7.04M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-03-25 | |
| Buy | null | 2026-03-25 | |
| Sell | null | 2026-03-25 | |
| Sell | null | 2026-03-13 | |
| Buy | null | 2026-03-13 | |
| Sell | null | 2026-03-13 | |
| Sell | null | 2026-03-13 | |
| Sell | null | 2026-03-13 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.